I'm cosplaying as Kamina soon, I'm a female but I don't want to look femenine at all while I'm in costume, I want to look as close to the character as possible, and I really don't want to use a wig. I know I'm going to have to dye it blue, but any suggestions, tips, or ideas on how to cut and style it to get the Kamina look? My hair goes down about 4 or 5 inches past my shoulders, and it's very thick and a bit wavy, and the ends always curl up btw. In case my hair type is gonna affect how I need to style it.

You really should just buy a wig. Think of all the time you will waste styling your hair rather than being at the convention each time you wear your cosplay versus a wig you can just throw on with minor touch ups between each time. Over the course of the day, hair will go limp while a wig will stay pretty much the same.

If you are completely against wigs though, you'll need to cut it all fairly short except the bangs which should go at least to your mouth, allowing for making the spikes.